[ARC][committed] Code cleanup and improvements.

Code clean up and improvements when changing the cpu from command
line. Also, remove unused/old emulations.

gas/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/tc-arc.c (arc_select_cpu): Re-init the bfd if we change
	the CPU.
	* config/tc-arc.h: Add header if/defs.
	* testsuite/gas/arc/pseudos.d: Improve matching pattern.

ls/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* Makefile.am: Remove earcelf_prof.c and earclinux_prof.c
	emulations.
	* Makefile.in: Regenerate.
	* configure.tgt: Likewise.
	* emulparams/arcelf_prof.sh: Remove file.
	* emulparams/arclinux_prof.sh: Likewise.

opcodes/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* arc-opc.c (C_NE): Make it required.

4 files changed, 24 insertions, 4 deletions

diff --git a/gas/ChangeLog b/gas/ChangeLog
index c6f93cc..0bf722b 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,10 @@
+2020-01-13  Claudiu Zissulescu  <claziss@gmail.com>
+
+	* config/tc-arc.c (arc_select_cpu): Re-init the bfd if we change
+	the CPU.
+	* config/tc-arc.h: Add header if/defs.
+	* testsuite/gas/arc/pseudos.d: Improve matching pattern.
+
 2020-01-13  Alan Modra  <amodra@gmail.com>
 
 	* testsuite/gas/wasm32/allinsn.d: Update expected output.
diff --git a/gas/config/tc-arc.c b/gas/config/tc-arc.c
index ed1e3fb..f8d469c 100644
--- a/gas/config/tc-arc.c
+++ b/gas/config/tc-arc.c
@@ -841,6 +841,7 @@ static void
 arc_select_cpu (const char *arg, enum mach_selection_type sel)
 {
   int i;
+  static struct cpu_type old_cpu = { 0, 0, 0, E_ARC_OSABI_CURRENT, 0 };
 
   /* We should only set a default if we've not made a selection from some
      other source.  */
@@ -871,7 +872,6 @@ arc_select_cpu (const char *arg, enum mach_selection_type sel)
                 }
 	      return;
             }
-
 	  /* Initialise static global data about selected machine type.  */
 	  selected_cpu.flags = cpu_types[i].flags;
 	  selected_cpu.name = cpu_types[i].name;
@@ -889,7 +889,17 @@ arc_select_cpu (const char *arg, enum mach_selection_type sel)
   /* Check if set features are compatible with the chosen CPU.  */
   arc_check_feature ();
 
+  /* If we change the CPU, we need to re-init the bfd.  */
+  if (mach_selection_mode != MACH_SELECTION_NONE
+      && (old_cpu.mach != selected_cpu.mach))
+    {
+      bfd_find_target (arc_target_format, stdoutput);
+      if (! bfd_set_arch_mach (stdoutput, bfd_arch_arc, selected_cpu.mach))
+	as_warn (_("Could not set architecture and machine"));
+    }
+
   mach_selection_mode = sel;
+  old_cpu = selected_cpu;
 }
 
 /* Here ends all the ARCompact extension instruction assembling
diff --git a/gas/config/tc-arc.h b/gas/config/tc-arc.h
index 9bd2ff6..b8eee4f 100644
--- a/gas/config/tc-arc.h
+++ b/gas/config/tc-arc.h
@@ -20,14 +20,15 @@
    Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
    02110-1301, USA.  */
 
-#include "opcode/arc.h"
-
+#ifndef TC_ARC
 /* By convention, you should define this macro in the `.h' file.  For
    example, `tc-m68k.h' defines `TC_M68K'.  You might have to use this
    if it is necessary to add CPU specific code to the object format
    file.  */
 #define TC_ARC
 
+#include "opcode/arc.h"
+
 /* We want local label support.  */
 #define LOCAL_LABELS_FB 1
 
@@ -267,3 +268,5 @@ struct arc_relax_type
   /* Number of flags.  Used for re-assembling in md_convert_frag.  */
   int nflg;
 };
+
+#endif
diff --git a/gas/testsuite/gas/arc/pseudos.d b/gas/testsuite/gas/arc/pseudos.d
index 9332f4d..7f59d47 100644
--- a/gas/testsuite/gas/arc/pseudos.d
+++ b/gas/testsuite/gas/arc/pseudos.d
@@ -6,7 +6,7 @@
 
 Disassembly of section .text:
 
-00000000 <.text>:
+[0]+ <.text>:
    0:	1cfc b008           	st.aw	r0,\[sp,-4\]
    4:	1404 3401           	ld.ab	r1,\[sp,4\]
    8:	0901 0002           	brlt.*	r1,r0,0	;0x8